Little sister I am not a doctor nor should this be taken as medical advice. For my family there where two people with conjested heart problems 70 and 80 percent block.
One died in 4 months from failure doing exactly what doctor said.
Other one, heart failure and conjestion is body repose to infection. A lot of this comes from long term infections from root canals, having them removed and the infections treated where the most effective as now at 101 years on 25 of may says it all.
The other thing is low salt is not super effective as your body needs electrolytes to function unless you have another issue is kidney salt in normal non processed cooking is fine. Get away from white death and get other salts, best is black salt it is from Pakistan himalayas the black comes from a iron rich environment second is the pink stuff from india/ Tibet atleast has trace minerals in it. Sea salt is all poison ad to the toxic crap and radiation in oceans. Remember your body is made from salty water not plain water.
The cholesterol myth causing damage…. without eating any body produces 2 grams daily.
This guy is a bit strange but well informed herbalist https://youtu.be/qRTNmIZbS8M
Best wishes on your husbands recovery